Final answer:
The question's validity is unclear due to missing context, but it involves concepts like vapor pressure, relative humidity, entropy, and solute effects on solvent properties that are typical in the study of Chemistry at the college level.
Step-by-step explanation:
The student's question that mentions seawater containing 3.50wt% salt passing through a series of evaporators is missing context, making it challenging to determine its veracity or relevance. However, we can discuss related concepts such as the effects of solutes on vapor pressure and phase changes of water which are relevant to the concentration of seawater and the example regarding the phase change of iodine gas. Typically, in chemistry, the addition of solutes like salt to a solvent like water will decrease the vapor pressure of the water due to the colligative property known as boiling point elevation.
Regarding the phase change of iodine from gas to solid, this is an example where the change in entropy is negative because the system is going from a state of higher randomness (gas) to a state of lower randomness (solid). Furthermore, the concept of atmosphere saturation and relative humidity relates to the partial pressure of water vapor in the air, which plays a significant role in processes like evaporation and perspiration.